Screening of Suitable Ionic Liquids as Green Solvents for Extraction of Eicosapentaenoic Acid (EPA) from Microalgae Biomass Using COSMO-RS Model

Omega-3 poly unsaturated fatty acids (PUFA) particularly eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), have many health benefits including reducing the risk of cancer and cardiovascular disease. Recently, the use of ionic liquids (ILs) in lipid extraction from microalgae provides the...

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Published in:Molecules (Basel, Switzerland) Switzerland), 2019-02, Vol.24 (4), p.713
Main Authors: Rezaei Motlagh, Shiva, Harun, Razif, Awang Biak, Dayang Radiah, Hussain, Siti Aslina, Wan Ab Karim Ghani, Wan Azlina, Khezri, Ramin, Wilfred, Cecilia Devi, Elgharbawy, Amal A M
Format: Article
Language:English
Subjects:
Algae
Anions
Aquatic microorganisms
Biocompatibility
Cardiovascular disease
Cations
Chloroform
COSMO-RS
Eicosapentaenoic acid
EPA extraction
extraction capacity
Fatty acids
Fish oils
Hydrogen bonds
infinite dilution activity coefficient
Ionic liquids
Lipids
omega-3
screening
Software
Solvent extraction
Solvent extraction processes
Solvents
Studies
Toxicity
Values
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Summary:Omega-3 poly unsaturated fatty acids (PUFA) particularly eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA), have many health benefits including reducing the risk of cancer and cardiovascular disease. Recently, the use of ionic liquids (ILs) in lipid extraction from microalgae provides the potential to overcome common drawbacks, offers several other benefits. To date, very limited researches are available to focus on extracting microalgae lipid and PUFA in particular by using ILs. The objective of current work is to screen the potential ILs that can be applied in EPA extraction. In this study, fast ILs screening was performed with the help of a conductor like screening model for real solvents (COSMO-RS) and the ILs with higher capacity values for use in extraction of EPA were compared. According to the results, the highest capacity for EPA extraction among 352 screened cation/anion combinations belongs to [TMAm][SO₄]. It is expected to achieve a higher yield of EPA once applying this combination as the solvent in the process of extraction. ILs with small anions were observed to have higher capacities, as well possessing higher charge density compared to larger ones, and therefore, they are more preferable for extraction purposes. Moreover, shorter alkyl chain cations are preferred when using imidazolium-based IL, which agrees with experimental data.
ISSN:1420-3049
1420-3049
DOI:10.3390/molecules24040713